keep a high protein diet and do lots of strength trainning, and some cardio
the strength trainning will help you gain more weight while the cardio makes you lose body fat
take it all the way and you will get ripped

Yes, you can loose parts specific body fat without losing weight or muscle. At 16 you are still growing so do not worry. Your body measurements puts you in a very healthy slim category so you do not need to loose weight or even fat, you may have few spots, that need taken care of.

So please do the following.

Find parts specific exercises and do them. Go to Internet and to the library to find them.

Please read this and see what is applicable to you. In your case you must loose loose fat and build mussel, by eating more proteins, but must eat little unsaturated fat and some carbohydrates fruits and lots of vegetable. You need to consume enough calories that are listed on th site below.
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All may not apply to you but here is some more info:

You can eat any thing and every thing, but must watch total calories in take per day, add up for the week and adjust the intake to compensate as needed next week, this way once in a while you can even pig out at a party. Never deprive yourself but if need be postpone the cravings. Never eat less then 1200 calories on any day, on long term bases never eat less then 1500 calories per day at the least, eat at least calories listed on the link on most days. Keep good written record of both the calories intake and calories burn.

Find some abdominal exercises and just do it , include side bends too and total body work out, to build hour glass shaped good firm fit strong body. All this is in the library and on the Internet too. So find it and do it, start slow and build up.

Here is an extract from my previous answer, see what applies to you.

Answer is simple.

Parts specific exercises, you can find it in library and on the Internet. So get going. Find them. Select them. Do them.

If. You are a teen then, you are still growing so you may grow taller too. So any rigorous routine may stunt your natural growth so you must not make any major changes in your eating habits may even have to eat little more, but depends. You just need to get more active.

Weight loss is simple but needs “will power” and “discipline”. Loose a pound per week but better still loose an 1/2 pound per week and keep it off for ever slow and steady wins the race. Haste is waste and it all shows up on your waist, in no time.

Your weight should be per the link below. To loose you need to eat right. Not eating carbohydrates is wrong you must consume all food groups. Little unsaturated fat is a must and some complex carbohydrate and fruits should be included too, eat lots of vegetable and rest of the calories should be in proteins. Avoiding buns and cake is Ok but must not be excluded, if you exclude any items then the craving will take over all of a sudden and it can be really bed and throw you off the diet without even knowing what happened.

You may be slightly over weight, but if you are under 30 years of age then you can still grow taller, by doing:
1). Pull ups.
2). Bicycling.
3).Swimming.
4.)Stretching.

You cannot loose weight just by watching the calorie consumption unless you are super active. You do need to find time to do body parts specific exercises paying attention to side bends and abdominal routine. You can find them on the Internet.

The best way is to eat right and exercise, loose it very slowly a pound per week but 1/2 pound will be even batter, loose it slow and keep it for ever loose it fast and gain it all back plush a few pounds. haste is waste and it just shows up on your waist latter.

Just eat right, sleep 8 to 9 hours, drink a gallon of water and exercise. Math is simple, burn 3500 calories and loose 1 pound of fat. Eat the calories per link and you will not loose mussels tissue.

Hint: You need to use the weight if you like to bulk up for competition, or just to show off. For toning you must not use weights or only very light weights.

Read Body Building, How to increase the height and weight loss answers given by me in the yahoo answers.

But here is some general info:

Study this site and make your own program based on the Knowledge imparted by the site and then go from there.

Click on the blue/green high lighted items on this site and read to see if any of it applies to you too.

Now click on “minootoo” then click on “Best Answers” you will see a lots of Qs? answered by others

1. 5’11 and 145 you should have little body fat to worry about. But I’ll answer your question. Body builders preparing for a contest will insure they get adequate protein to keep their muscle gains, which would be about 1.5 to 2 grams of protein per pound of lean body weight. They do steroids so they can use that much protein. Your goal should be 1 to 1.5 grams if you are lifting. They do High Intensity Interval Training or HIIT training. This is an intense, 20 to 30 minute workout that burns body fat but generally leaves the muscle mass alone. They avoid long duration cardio. Diet is important when getting cut.

Losing weight and getting fitter is really quite simple. All you have to do is a few simple things. Firstly, clear your fridge of fatty junk foods. If there’s no temptation, you cannot fall. Secondly, stock up on watermelon and other fruits. Watermelon is excellent because it clears out your digestive system of toxins and waste, leaving you feeling and being healthier. Next, begin exercising every day. Do not go too hard. If running, don’t go fast or uphill, unless you want bulky muscle. A steady pace each day for a minimum of 30 minutes will allow you to shed fat and tone your body. Set a day each week when you each junk food, but try not to go overboard and ruin the work of every other day. Drink plenty of water, often when you think you are hungry, you are actually thirsty. If you are getting cravings, have a glass of water, wait 5 minutes, and then see if you still want food. This usually gets rid of those nasty afternoon hunger pangs for me!